Totalizer control mechanism for adding



March 1962 o. 'HABERKORN TOTALIZER CONTROL MECHANISM FOR ADDING ANDCALCULATING MACHINES Filed Aug. 26, 1955 4 Sheets-Sheet 1 FIG. 1

/N VE N 7'02 March 20, 1962 Filed Aug. 26, 1955 O. HABERKORN TOTALIZERCONTROL MECHANISM FOR ADDING AND CALCULATING MACHINES 4 Sheets-Sheet 2lNVENTOR a /1M March 20, 1962 o. HABERKORN 3,026,026

- TOTALIZER CONTROL MECHANISM FOR ADDING AND CALCULATING MACHINES FiledAug. 26, 1955 4 Sheets-Sheet :s

IN VENTOR March 20, 1962 o. HABERKORN 3,026,026 TOTALIZER CONTROLMECHANISM FOR ADDING AND CALCULATING MACHINES Filed Aug. 26, 19554Sheecs-Sheet 4 INVENTOR United States Patent 3,026,026 TOTALIZERCONTROL MECHANISM FOR ADDING AND CALCULATING MACHINES Otto Haberkorn,Gerstetten, Wurttemberg, Germany, as-

signor to Walther Biiromaschinen Gesellschaft m.b.l-I., Gerstetten,Wnrttemberg, Germany, a firm Filed Aug. 26, 1955, er. No. 530,707 Claimspriority, application Germany Sept. 10, 1954 Claims. (Cl. 23560) Theinvention relates to a totalizer engaging and disengaging mechanism foradding and calculating machines having cam discs secured on a rotatingdrive shaft, and differential members being advanced by springs duringthe first half-revolution, and returned by a pick up bar during thesecond half revolution of said shaft, said differential members beingengaged by the totalizer during definite periods of time according tothe set function of the machine.

The engagement of the totalizer occurs upon adding and subtractingduring the second half-revolution, upon totalizing during the firsthalf-revolution and upon subtotalizing during both half-revolutions.Upon non-add operation no engagement takes place.

The cam discs which are used in the totalizer engaging and disengagingmechanisms moved in one direction enabling greater calculating velocityactuate follower levers which are connected with the linkage forengagement and disengagement of the totalizer.

The adjustment of the totalizer engaging and disengaging mechanism tothe different functions of the machine, in known machines if this kind,is performed in such a way that a single follower lever is associatedwith the the cams of the different functions of the machine and thisfollower lever is separately adjusted to the different cams. Further itis known to associate a particular follower member with each cam and toselectively couple these follower members with the linkage for engagingthe totalizer.

In order to simplify the structure and to increase the reliability ofsuch a control-mechanism, according to the invention, two cam discs onefor adding or subtracting and the other for totalizing are provided for,while for substotalizing the cam disc for totalizing is active duringthe first half-revolution and during the second half-revolution thetotalizer is maintained in its engaging position by a supporting memberwhich is released by a projection of the drive shaft at the end of thissecond half-revolution.

In order to practically perform this idea the linkage for engaging thetotalizer will be selectively coupled with follower members oscillatedby the concerned cam disc by shifting of a coupling pin within a slot ofthe linkage, therebyadjusting the coupling-pin opposite to coupling lugsof the follower members of the cams which are located one after theother in the direction of the slot. Particularly, the coupling pin, inits position of rest, is adjusted opposite to the coupling lug foradding or subtracting, respectively, and is adjusted into a second andthird shifted position opposite another coupling lug of another followermember for totalizing thereby releasing, in the third shifted position,the supporting lever which is maintained in the first and second shiftedposition in its inactive position.

The supporting lever is pivoted on the linkage for engaging thetotalizer and cooperates by means of its supporting arm with a fixedstop and by means of an arm with said coupling pin, in such a way, thatthe latter maintains the supporting lever during the two first shiftedpositions in an inactive position against the action of a spring bymeans of its blocking arm, while it releases the supporting lever in thethird shifting position thereby enice ebling its supporting arm to bemoved over the fixed stop at the end of the engaging movement of thetotalizer.

Further features of the invention result from the following descriptionof an embodiment of the invention applied to a ten-key-adding-machine.

In the accompanying drawing:

FIG. 1 is a side elevation of the main-mechanisms of the adding machine,

FIG. 2 is a top view of the drive and coupling mechanism for theengaging linkage,

FIG. 3 is a side elevation of the cam disc for adding or subtracting,together with its follower lever,

FIG. 4 is a side elevation of the coupling part of the engaging linkagetogether with the supporting lever,

FIG. 5 is a side elevation of the cam disc for totalizing with itsfollower lever,

FIG. 6 is a side elevation of the releasing mechanism for the supportinglever in the active position of that lever,

FIG. 7 is a corresponding view in the released position of thesupporting lever.

In the ten-key machine to which the totalizer engaging and disengagingmechanism is to be applied the amount keys 1 (FIG. 1) act by means oftheir stem ends in a known manner on the set-pins 3 located in aset-pins 3 located in a set-pin slide 2 being slidable in a transversedirection. The lower ends 4 of the set-pins will be brought into the wayof projections 5 of differential membets 6 which try to move them, onthe action of springs 7, till they abut on the adjusted set pins 3, 4 assoon as they are released in the direction of the arrow 9 by a transversely arranged pick up or restoring bar 8.

The differential members 6 are connected with a rack 11 whichparticipates in the movement of the differential members and cooperatewith intermediate wheels 12, 13 of the totalizer 14.

The totalizer is selectively supported by means of two laterallyprojecting swinging bolts 15, 16, respectively,

on a rail 17 and may be swung about the supporting swinging bolt by apull hook 18 so that either the intermediate wheels 12 or theintermediate wheels 13 engage with the diflerential racks 11.

In the first case corresponding to the position of rest of the rail 17where, as shown in FIGURE 1, the swinging bolt 15 serves as support, thetotalizer is adjusted for adding, whilst in the second case the swingingbolt 16 supports the totalizer after shifting the rail 17 into the leftend position by means of the subtracting key 19.

The pick-up bar 8 moves at the beginning of the operation of the machinetowards the right in the direction of the arrow 9 and releases thedifferential members 6 enabling them to be adjusted to the value of theadjusted set pins 4. Upon this adjustment movement the intermediatewheels remain out of engagement with the differential racks 11. Prior tothe restoring of the pick up bar 8 to the left during the second part ofthe machine cycle the totalizer will be brought into mesh with thedifferential racks 11 by means of the intermediate wheels 12 or 13 bymoving down the pull books 18 in accordance with the subtraction key '19being depressed or not, so that upon returning of the differentialmembers 6 by the pick up bar 8 the amount being set in the differentialmembers 6 will be transmitted to the totalizer.

Upon totalizing the downward-movement of the pull hooks 18 takes placeat the beginning of the machine operation whereby the rail 17 remains inits position of rest so that upon the following movement towards theright of the pickup bar 8 the differential racks 11 will rotate thewheels 21 by the action of the springs 7 until they are stopped in theirzero-position, and the amount being in the totalizer wheels will betransmitted to the 3 differential members 6, 11. The movement of thedifferential racks '11 is transmitted by means of intermediate wheels 22to type-segments 23, which are mounted on swing-able levers 24, beingreleased at a suitable moment in order that they swing to the right bythe action of springs 25 striking the adjusted types to the platen.

Upon subtotalizing the totalizer 14 will be brought into engagement withthe differential racks 11 at the beginning of the machine-operation inthe same manner as upon totalizing, however the totalizer must remainengaged during the second part of the machine operation so that uponreturning the pick-up bar towards the left, the amount transmitted tothe differential racks 11 will be restored into the totalizer wheels 21.

Now, in order to correspondingly move the pull hooks 18 up and down thefollowing control mechanism is provided for. On the main drive shaft 26two cam discs 27 and 28 (FIG. 2) are secured side by side. Cam disc 27is destined for adding and subtracting and cooperates with a followerlever '29, shown in FIG. 3 and pivoted on a shaft 31 rotatable in theframe of the machine. A follower lever 32 shown in FIG. 5 cooperateswith the cam disc 28 destined for totalizing being also revolublymounted on shaft 31. Both levers will be held in contact with their camdiscs by springs 33 (FIG. 1).

The left hand arms of the two levers are located within the intermediatespace between two coupling arms 34 (FIGS. 2 and 4) secured to the shaft31, which are provided each with a longitudinal slot 35, within which acoupling pin 36 can be shifted which thereby can take up the fourshifted positions represented in FIGS. 3 to 5. The coupling pin 36 isfixed to a bar 37 (FIGS. 1 and 2) which is linked to the lower end of atwoarmed lever 38 the upper end of which is pivotally connected to adiffer-. ential rail 39 of the setting mechanism for the functions ofthe machine.

The differential rail 39 is located below a key-row, the keys of whichare designated by (subtracting), (nonadding), (subtotalizing), and(totalizing). The shafts of the three left hand keys cooperate withoblique '7 surfaces 41 having different slope, in such a way, that ondepressing one of the keys the coupling pin 36 is adjusted by means ofthe two armed lever 38 and the bar 37 from its right hand positiondestined for adding into one of the other three shifting positionsfollowing towards the left.

In'the position of rest (FIG. 3) the coupling pin 36 is located above acoupling lu'g 42, of the follower lever 29. in the second and thirdshifted positions following to the left it is adjusted above a broadercoupling lug 43 (FIG. of the follower lever 32 for totalizing orsubtotalizing, respectively.

In the fourth shifted position lying farthest to the left it is placedout of the way of the coupling faces 42 and 43.

Two arms 44 (FIGS. 1 and 2) are fixed to the shaft 31, which are linkedby means of bolts 45 to the lower ends of the pull hooks 18. When theswinging movethe first half revolution and is found in its position ofrest during the second half revolution.

The coupling lugs 42 and 43 are moved up and down during each machineoperation. If the coupling pin 36 is adjusted above one of the couplinglugs, the totalizer will be correspondingly moved up and down byrneansof the coupling arms 34 and the other leverage in the above mentionedway during adding and subtracting (first shifting position, FIG. 3) andduring totalizing (second shifting position, FIG. 5).

Upon subtotalizing (third shifted position, FIG. 5) the totalizerlikewise is engaged during the first half-revolution of the drive shaft31 by the movement of the coupling lug 43, however, at the end of thefirst half-revolution the totalizer is not disengaged but remains in itsengaging position by means of a supporting lever 46 in the followingmanner (FIGS. :1, 2 and 4.)

The supporting lever 46 is pivoted about a pin 47 between the twocoupling arms 34 and is also movable between the two follower levers 29and 32. It has a hooklike blocking-arm 48 and a supporting arm 49directed downwardly, which is provided with a recess 51 and is actuatedby a spring 52. The recess cooperates with a lug in the form of a shaft53 (FIGS. 1, 6, 7) on which a two-armed lever 54 is pivoted Whichprovides at its upper end a pin 55 cooperating with the supporting arm49. Said lever 54 being connected at itslower 'end with I afollower-lever 58 pivoted about a pin 57 and cooperatlever 46 can rotateabout its pivots 47 in a clockwise ment of one of the follower levers29, 32 is transmitted 7 J wise revolution at each machine operationunder the control of a one-revolution clutch. It will be seen from theshape and the arrangement of thec'am discs 27 and 28,

that-the cam. disc 27 for adding or subtracting, respectively, maintainsits follower lever 29- during the first half revolution in its positionof rest, and, then, .during the second half-revolution, swings it and,at the end of the second half-revolution, returns it into the positionof rest. 'The cam disc 28actuates'in an inverse manner on its 1 followerlever 32 upon totalizing. It is swung, during direction upon upwardmovement of the coupling arms 34 which takes place under the action ofthe spring 52,

thereby placing its recess 51 on the shaft 53 in its upper- 7 mostposition, as shown in FIG. 6.

Thereby, during the second half-revolution. of the driv shaft 26, thecoupling arms 34 are'maintained in their upper position and thetotalizer in its engaging position. At the end of the operation of themachine the tappet 59 engages the roll of the follower lever 58 andswings the latter and thereby by means of the link 56 also the two-armedlever 54 in a clockwise direction, whereby the pin 55 strikes againstthe supporting arm 46, withdrawing it with its recess from the shaft 53against the'action of the spring 52, in such a way, that the couplingarms 34 return under the action of their spring into their lowerposition of rest and the totalizer returns to its' (FIG. 1) the movementof which will be transmitted to the associated sign type wheel 23 bymeans of an intermediate wheel 22 in such a way, that the function signcorresponding to the adjusted'function will'be printed at the side ofthe amount.

The described arrangement for a ten-key adding machine may be usedwithout great modification for a full key adding or calculating machine.The totalizer coutrol rnechanism may be accordingly used also withadding and calculating machines inwhichthe periods for What I claim is:

1. In a totalizer control mechanism for adding and calculating machines,-a totalizer, spring actuated differential members cooperatingtherewith, a pick up bar cooperating with said differential members, adrive mechanism comprising a drive shaft performing one revolution oneach cycle of operation of the machine causing a reciprocation of saidpick up bar, freeing the differential members during the first half ofthe revolution for their forward movement and returning said displaceddifferential members during the second half to their normal position,means for engaging and disengaging said totalizer with said differentialmembers, two cam discs secured to said drive shaft for controlling saidtotalizer engagement, one for adding, the other for totalizing andsubtotalizing, two follower levers each cooperating with one of said camdiscs, means for selectively connecting said follower levers with saidtotalizer engaging and disengaging means, said cam discs being adaptedto hold said totalizer in engagement: on adding during said returnmovement and on totalizing during said forward movement, a supportingmember adapted to lock said totalizer in its engaged position during thereturn movement of said differential members, means for maintaining saidsupporting member in inoperative position during totalizing, adding, andsubtracting cycles, means for rendering said supporting membersoperative during subtotaling cycles, and releasing means actuated bysaid drive shaft at the end of the return movement of said differentialmembers for releasing said supporting memher.

2. In a totalizer control mechanism according to claim 1, said means forselectively connecting said follower levers with said totalizer engagingmeans comprising two spaced coupling arms connected with said totalizerengaging and disengaging means and having a longitudinal slot, acoupling pin shiftable within said slot, a shiftable bar mounting saidcoupling pin, coupling lugs on said follower levers cooperating withsaid coupling pin, a rocking shaft having said coupling arms fixedthereto and rotatably mounting said two follower levers, said couplingpin shifting bar being located between said two follower levers and saidfollower levers being located between said two coupling arms.

3. In a totalizer control mechanism according to claim 1, said means forselectively connecting said follower levers with said totalizercomprising coupling arms connected with said totalizer having alongitudinal slot function setting means, a coupling pin shiftablewithin said slot, means for adjusting said pin in different shiftedpositions along said slot, each coordinated to one of the functionsetting means of the machine, coupling lugs operatively connected withsaid cam discs and cooperating with said coupling pin, whereby thecoupling pin connects the totalizer with the cam disc according to itsshifted position, said coupling pin being operatively connected in itsfirst position and position of rest with the adding-subtracting camdisc, in its second and third position with the totalizing cam disc,connecting means between said coupling pin and said supporting memberwhereby the latter in the first and second shifted position of thecoupling pin is maintained in its ineffective condition and in the thirdshifted position in its effective condition for enabling subtotaling.

4. In a totalizer control mechanism according to claim 1, said means forselectively connecting said follower levers with said totalizer meanscomprising coupling arms connected with said totalizer engaging anddisengaging means having a longitudinal slot function setting means, acoupling pin shiftable within said slot, means for adjusting saidcoupling pin in different shifted positions along said slot eachcoordinated to one of the function setting means of the machine,coupling lugs on said follower cooperating With said coupling pin, saidmeans for maintaining such cooperation comprising blocking armcooperating with said coupling pin adapted to be blocked by the pinbeing in its first and second shifting position in order to maintain thesupporting member in its ineffective position and release it in thefollowing shifted position for subtotalizing enabling it to move intoits effective position.

5. In a totalizer control mechanism according to claim 1, said means forreleasing said supporting member comprising a tappet secured on saiddrive shaft, a follower lever cooperating with said tappet, a pinoperatively connected with said follower lever and cooperating with saidsupporting member, whereby the supporting member is moved in itsineffective position by the tappet at the end of the secondhalf-revolution of the drive-shaft.

References Cited in the file of this patent UNITED STATES PATENTS1,325,195 Goldberg Dec. 16, 1919 1,778,506 Pasinski Oct. 14, 19302,071,880 Kammel Feb. 23, 1937 2,181,975 Lee Dec. 5, 1939 2,648,497Boyden Aug. 11, 1953 2,681,767 Hopkins et al June 22, 1954 2,822,976Pitman Feb. 11, 1958

